🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.53 AU - 0.55 AU

Year: 260 Days

Day: 40.7 Hours

Environment

Temp: -117 °C

Axial Tilt: 142.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 584.8

Radius: 11.4

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.61 AU - 0.91 AU

Year: 435 Days

Day: 9.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,829,618 km

• M1: 141,819 km (0.074 R)
• M2: 608,564 km (0.07 R)
• M3: 1,124,826 km (0.117 R)
• M4: 1,717,084 km (0.088 R)
• M5: 2,144,635 km (0.091 R)
• M6: 3,286,216 km (0.067 R)
• M7: 4,678,374 km (0.106 R)
• M8: 5,081,092 km (0.057 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.8

Radius: 8.8

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.92 AU - 1.14 AU

Year: 686 Days

Day: 14.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,829,618 km

• M1: 109,506 km (0.088 R)
• M2: 387,010 km (0.089 R)
• M3: 714,330 km (0.052 R)
• M4: 1,008,589 km (0.106 R)
• M5: 1,412,503 km (0.074 R)
• M6: 1,838,857 km (0.12 R)
• M7: 2,132,667 km (0.105 R)
• M8: 2,438,146 km (0.114 R)
• M9: 3,420,406 km (0.092 R)
• M10: 4,107,658 km (0.082 R)
• M11: 4,401,169 km (0.087 R)
• M12: 4,692,885 km (0.114 R)
• M13: 5,918,541 km (0.084 R)
• M14: 6,826,151 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.7

Radius: 10.5

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.68 AU - 1.92 AU

Year: 1584 Days

Day: 5.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,829,618 km

• M1: 130,599 km (0.063 R)
• M2: 458,966 km (0.074 R)
• M3: 856,298 km (0.092 R)
• M4: 1,209,349 km (0.066 R)
• M5: 1,557,763 km (0.116 R)
• M6: 1,937,592 km (0.113 R)
• M7: 2,497,237 km (0.065 R)
• M8: 3,454,065 km (0.092 R)
• M9: 4,217,164 km (0.098 R)
• M10: 6,259,923 km (0.109 R)
• M11: 6,875,967 km (0.092 R)
• M12: 7,416,015 km (0.099 R)
• M13: 7,959,804 km (0.052 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.8

Radius: 11.2

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 2.21 AU - 2.63 AU

Year: 2470 Days

Day: 5.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 56,829,618 km

• M1: 139,276 km (0.071 R)
• M2: 1,466,209 km (0.116 R)
• M3: 1,995,935 km (0.113 R)
• M4: 3,152,326 km (0.101 R)
• M5: 4,094,643 km (0.05 R)
• M6: 5,308,331 km (0.058 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.7

Radius: 14.8

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 4.87 AU - 6.57 AU

Year: 8974 Days

Day: 13.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,829,618 km

• M1: 184,005 km (0.096 R)
• M2: 749,037 km (0.108 R)
• M3: 1,304,942 km (0.053 R)
• M4: 2,297,075 km (0.091 R)
• M5: 5,514,926 km (0.105 R)
• M6: 6,023,857 km (0.058 R)
• M7: 8,739,059 km (0.104 R)
• M8: 13,174,336 km (0.096 R)
• M9: 13,779,460 km (0.077 R)
• M10: 15,773,899 km (0.047 R)
• M11: 16,595,341 km (0.045 R)
• M12: 17,807,981 km (0.098 R)
• M13: 19,854,181 km (0.074 R)
• M14: 23,960,941 km (0.049 R)
• M15: 24,681,405 km (0.111 R)
• M16: 28,402,652 km (0.091 R)
• M17: 32,047,454 km (0.07 R)
• M18: 36,227,967 km (0.066 R)
• M19: 40,125,889 km (0.091 R)
• M20: 42,175,978 km (0.051 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 46.5

Radius: 6.1

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 7.07 AU - 8.19 AU

Year: 13826 Days

Day: 21.4 Hours

Environment

Temp: -224 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 56,829,618 km

• M1: 78,838 km (0.075 R)
• M2: 520,900 km (0.091 R)
• M3: 891,005 km (0.109 R)
• M4: 1,213,987 km (0.117 R)
• M5: 1,855,313 km (0.111 R)
• M6: 2,094,669 km (0.11 R)
• M7: 2,430,517 km (0.118 R)
• M8: 2,717,894 km (0.032 R)
• M9: 2,921,946 km (0.079 R)
• M10: 3,457,805 km (0.041 R)
• M11: 4,035,253 km (0.102 R)
• M12: 7,417,062 km (0.099 R)
• M13: 7,817,386 km (0.112 R)
• M14: 8,807,575 km (0.11 R)
• M15: 9,486,749 km (0.033 R)
• M16: 11,336,527 km (0.099 R)
• M17: 12,003,135 km (0.056 R)
• M18: 13,561,047 km (0.072 R)
• M19: 16,116,029 km (0.084 R)
• M20: 16,787,424 km (0.05 R)
• M21: 17,829,074 km (0.083 R)
• M22: 18,126,026 km (0.071 R)
• M23: 18,668,617 km (0.103 R)
• M24: 20,168,785 km (0.115 R)
• M25: 21,278,652 km (0.071 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 559

Radius: 7.2

Gravity: 10.78 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 7.18 AU - 8.42 AU

Year: 14291 Days

Day: 18.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 56,829,618 km

• M1: 91,105 km (0.036 R)
• M2: 368,310 km (0.11 R)
• M3: 1,086,829 km (0.086 R)
• M4: 1,416,841 km (0.039 R)
• M5: 1,715,289 km (0.063 R)
• M6: 1,983,817 km (0.086 R)
• M7: 2,300,067 km (0.106 R)
• M8: 2,649,528 km (0.083 R)
• M9: 3,886,852 km (0.087 R)
• M10: 4,263,390 km (0.118 R)
• M11: 5,055,959 km (0.101 R)
• M12: 5,794,524 km (0.101 R)
• M13: 6,522,766 km (0.085 R)
• M14: 7,930,333 km (0.113 R)
• M15: 8,206,490 km (0.109 R)
• M16: 8,729,485 km (0.09 R)
• M17: 9,376,047 km (0.069 R)
• M18: 10,161,136 km (0.093 R)
• M19: 10,876,364 km (0.076 R)
• M20: 11,981,443 km (0.083 R)
• M21: 12,654,334 km (0.1 R)
• M22: 13,223,554 km (0.102 R)
• M23: 13,875,651 km (0.076 R)
• M24: 15,033,389 km (0.1 R)
• M25: 15,743,830 km (0.106 R)
• M26: 16,550,760 km (0.079 R)
• M27: 17,308,174 km (0.052 R)
• M28: 17,617,393 km (0.047 R)
• M29: 18,167,614 km (0.093 R)
• M30: 20,141,109 km (0.084 R)
• M31: 21,091,654 km (0.047 R)
• M32: 28,814,794 km (0.067 R)
• M33: 30,355,353 km (0.083 R)
• M34: 35,058,111 km (0.111 R)
• M35: 38,493,327 km (0.025 R)
• M36: 40,903,947 km (0.035 R)
• M37: 46,617,838 km (0.113 R)
• M38: 51,395,695 km (0.109 R)
• M39: 56,320,457 km (0.096 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 492 - 16,582 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit